Poor actor that may be cured? (3)
I believe the answer is:
ham
This clue is a double definition.
'poor actor' is the first definition.
(ham can mean a bad or over-the-top actor)
'that may be cured?' is the second definition.
(as in cured ham)
(Other definitions for ham that I've seen before include "under twenty-eight [HIP]" , "One of Noah's sons" , "Meat; radio operator" , "Bad actor; Noah son" , "Poor person acting" .)